Engineering HandBook vs WS Drill Bits
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Engineering HandBook
Access essential engineering formulas and concepts on the go. This app covers materials, numbers, mechanics, components, and metal cutting operations, providing accurate calculations for various engineering tasks.
- Engineering formulas and calculations
- Materials classification and properties
- Basic and trigonometric calculations
- Unit conversions
- Gear drive formulas
- Metal cutting operation calculations
Read full descriptionHide full description
Engineering HandBook allows you to carry engineering concepts where-ever you go. Features available in Engineering handbook are: 1. Materials. 2. Numbers. 3. Mechanics. 4. Engineering Components, and 5. Metal Cutting Components. View various engineering related formulas and calculate values. Calculate accurately and access formulas while on worksite, in meetings, or during Work. Materials features: Classification of categories of ferrous metals (Steel, Iron), Non-ferrous metals and Plastics. Property details of various Elements. Calculate equal and unequal angles as per Indian Standards. Numbers features: Basic mathematical calculations. Trigonometric calculation. Pythagorean theorem. Inch to Millimeter and vice versa convertor. Units of physical quantities. Symbols, and Measures and weights. Mechanics features: Formulas for Gear drive and dimensions. Engineering Components Features: Hole to Shaft and vice versa Convertion. Metal Cutting Operation features: Calculate Folding, edging and Cold bending value. Cutting speed. Machining time. Clearance between die and punch, and Cutting force.
WS Drill Bits
This application serves machinists, designers, and manufacturing personnel with essential drill bit calculations. It features a comprehensive drill size chart with decimal equivalents, a calculator for optimal speeds and feeds across various materials, and a tool for determining drill point depth based on angle.
- Drill size and decimal equivalent chart
- Fast vertical scrolling with color-coded values
- Sliding scale for quick list navigation
- Speeds and feeds calculator for various materials
- Drill point depth calculator
- Supports metric and inch measurements
Read full descriptionHide full description
Workshop (WS) Drill Bits Is a full functioning Drill Bit Calculator simply designed for the Machinists Workshop, Designer's and Manufacturing Personel. Contains the following three functions: 1) A vertical scrolling Drill Size and Decimal Equivalent Chart. *From 0.1mm(0.00394 Inch) to 101.6mm(4.0 Inches) *Offers Fast Vertical Scrolling *Inch Fractions are highlighted in Blue *Metric Numbers are highlighted in Red *Gage/Letter Numbers are also listed *Inch Fractions values are also listed. *A sliding scale allows you to jump to any point on the list fast.(Separately for both mm and inch values) 2) Twist Drill Speeds and Feeds *Calculates recommended Drill Speeds and Feed Rates for various materials: *Option to enter in either Metric or Inch size Drills -Aluminium -Brass -Bronze -Cast Iron -Hastelloy -Inconel -Magnesium -Monel -High Nickel Steel -Free Cutting Steel -Mild Steel -Steel -Tool Steel -Forgings -Alloys -Heat Treated Steels -Stainless Steels -Titanium -Wood and Plastics 3) Drill Point Depth Calculator *Calculates the Drill Point Depth for various Drill Point Angles (60',82',90',118',120',135') *Option to enter in either Metric or Inch size Drills.
Screenshots
Verdict
The clearest difference is rating: WS Drill Bits at 5.0 against Engineering HandBook's 4.0. Engineering HandBook's advantage is update cadence (every 2 weeks vs every 16 months) and iOS requirement (6.0 vs 9.0). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
WS Drill Bits holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.
Engineering HandBook ships an update every 2 weeks, WS Drill Bits every 16 months. The most recent releases landed on June 8, 2026 and June 10, 2026 respectively.
| Parameter | Engineering HandBook | WS Drill Bits |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) | 5.0 (2 ratings) — better |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 2 weeks — better | Every 16 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 6.0 — better | 9.0 |
| Further details — not scored | ||
| Size | 12 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Raghu Srinivas | Rein Rapp |
Customer experience
Engineering HandBook
WS Drill Bits
In-app purchases
Engineering HandBook
No in-app purchases
WS Drill Bits
No in-app purchases
Questions
Is Engineering HandBook free?
Is WS Drill Bits free?
Which has better reviews, Engineering HandBook or WS Drill Bits?
Do Engineering HandBook or WS Drill Bits have ads?
Which is updated more often, Engineering HandBook or WS Drill Bits?
Other comparisons
